Novel construction for lubrication pumps

TR Series lubrication pumps employ a combination of components that are fitted onto - and driven by - a shaft that is part of the equipment that requires lubrication.

TR Series lubrication pumps employ a combination of components that are fitted onto - and driven by - a shaft that is part of the equipment that requires lubrication.

TR pumps have no body or separate shaft, only pumping elements and cover.

This novel concept enables Tuthill Pump Group to offer a very compact and economical method of installing a lubrication pump in OEM equipment.

A major feature of the TR is an automatic reversing capability that ensures lubrication flow is maintained irrespective of the direction of shaft rotation, which is particularly useful for gearbox and transmission applications.

Another feature is the use of a spring loaded floating plate that both forms the back of the fluid chamber and acts as an automatic relief valve that can operate at pressures between 1.0 and 10bar(g).

Also, the discharge from the pump can be split within the cover so that flow may be directed up the centre of the driving shaft.

Flow directed through the shaft can be either the total pump discharge or a proportion of it, the remainder being directed through the normal discharge port (internal or external).

This through-shaft lubrication feature is especially useful when the crankshaft journal bearings are being lubricated.

Speed range for the TR is 250 to 3600rev/min and capacities range up to 40.40 litre/min.

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